Battery cell assembly, battery module including same battery cell assembly, battery pack including same battery module, and automobile including same battery pack

Abstract

A battery cell assembly includes a plurality of cylindrical cell blocks, each of the plurality of cylindrical cell blocks including a plurality of cylindrical cells, a block cover configured to cover an upper side of the plurality of cylindrical cell blocks and electrically connect the plurality of cylindrical cell blocks, a cooling plate located opposite to the block cover and disposed at a lower side of the plurality of cylindrical cell blocks and a heat transfer member disposed between the cooling plate and the plurality of cylindrical cell blocks and having a plurality of thermal interface materials corresponding to bottom portions of the plurality of cylindrical cells.

What is claimed is: 
     
       1. A battery cell assembly, comprising:
 a plurality of cylindrical cell blocks, each cylindrical cell block including a plurality of cylindrical cells; 
 a block cover configured to cover an upper side of the plurality of cylindrical cell blocks and electrically connect the plurality of cylindrical cell blocks; 
 a cooling plate located opposite to the block cover and disposed at a lower side of the plurality of cylindrical cell blocks; and 
 a heat transfer member disposed between the cooling plate and the plurality of cylindrical cell blocks and having a plurality of thermal interface materials corresponding to bottom portions of the plurality of cylindrical cells, 
 wherein each of the plurality of cylindrical cell blocks includes: 
 a top cover covering the plurality of cylindrical cells; 
 a first heat insulating member configured to cover side surfaces of the plurality of cylindrical cells; 
 a second heat insulating member configured to cover an upper side of the plurality of cylindrical cells and disposed at an inner side of the top cover; and 
 a third heat insulating member spaced apart from the second heat insulating member by a predetermined distance and exposed to the upper side of the top cover. 
 
     
     
       2. The battery cell assembly according to  claim 1 , wherein the plurality of cylindrical cell blocks are shaped corresponding to each other such that neighboring cylindrical cell blocks are coupled with each other in a block type. 
     
     
       3. The battery cell assembly according to  claim 2 , wherein each of the plurality of cylindrical cell blocks further includes:
 a bottom cover configured to accommodate the bottom portions of the plurality of cylindrical cells; 
 a pair of bus bar members provided at an upper side of the top cover to electrically connect the plurality of cylindrical cells; and 
 an insulation member provided between the pair of bus bar members. 
 
     
     
       4. A battery cell assembly, comprising:
 a plurality of cylindrical cell blocks, each cylindrical cell block including a plurality of cylindrical cells; 
 a block cover configured to cover an upper side of the plurality of cylindrical cell blocks and electrically connect the plurality of cylindrical cell blocks; 
 a cooling plate located opposite to the block cover and disposed at a lower side of the plurality of cylindrical cell blocks; and 
 a heat transfer member disposed between the cooling plate and the plurality of cylindrical cell blocks and having a plurality of thermal interface materials corresponding to bottom portions of the plurality of cylindrical cells, 
 wherein each of the plurality of cylindrical cell blocks further includes:
 a bottom cover configured to accommodate the bottom portions of the plurality of cylindrical cells; 
 a top cover coupled to the bottom cover and configured to cover top portions of the plurality of cylindrical cells; 
 a pair of bus bar members provided at an upper side of the top cover to electrically connect the plurality of cylindrical cells; and 
 an insulation member provided between the pair of bus bar members, 
 
 wherein each of the plurality of cylindrical cell blocks includes a plurality of heat insulating members configured to prevent flame spread toward neighboring cylindrical cells when at least one of the plurality of cylindrical cells is ignited, 
 wherein the plurality of heat insulating members include: 
 a first heat insulating member configured to cover side surfaces of the plurality of cylindrical cells; 
 a second heat insulating member configured to cover an upper side of the plurality of cylindrical cells and disposed at an inner side of the top cover; and 
 a third heat insulating member spaced apart from the second heat insulating member by a predetermined distance and exposed to the upper side of the top cover. 
 
     
     
       5. A battery module, comprising:
 at least one battery cell assembly according to  claim 1 ; and 
 a module case configured to package the at least one battery cell assembly. 
 
     
     
       6. The battery module according to  claim 5 , wherein the module case includes:
 a main cover configured to cover the at least one battery cell assembly; and 
 a front cover coupled to the main cover to cover a front side of the at least one battery cell assembly. 
 
     
     
       7. A battery pack, comprising:
 at least one battery module according to  claim 5 ; and 
 a pack case configured to package the at least one battery module. 
 
     
     
       8. A vehicle, comprising at least one battery pack according to  claim 7 . 
     
     
       9. The battery cell assembly according to  claim 1 , wherein each of the plurality of cylindrical cell blocks further includes:
 a bottom cover configured to accommodate the bottom portions of the plurality of cylindrical cells, the bottom cover having a bottom wall and a side wall extending upward from the bottom wall. 
 
     
     
       10. The battery cell assembly according to  claim 9 , wherein side walls of adjacent cylindrical cell blocks directly contact each other. 
     
     
       11. The battery cell assembly according to  claim 9 , wherein the side walls have an uneven shape for coupling with an adjacent cylindrical cell block.